People reading 7 episodes in one is actually really encouraging. Most people click onto the book and then click off if they don't like it so only episode 1 gets views on a lot of stuff.
Also I got put on the community page as a comic at under 100 subs and with less than 20 actual pages of my comic up at all, the tapas people are out there actively looking at new things that get published on the site so if you're regularly posting for a month or two they'll check you out and of they like what they read they'll put you on their lists to be popped on the page in the future.